I am using Mac OS X package of JOSM 11526, Java 1.8.0_111 and I noticed this on start up for current and previous version…
“Add heatmap mode for gps rendering”
In expert mode, I have been unable to locate any reference to a heatmap in Preferences>Display Settings>GPS Points
and under imagery I only see the Strava data has ‘heatmap’
Can you tell me how to access this feature for gps?
Edit: Solved - did not scroll down enough on page Preferences>Display Settings>GPS Points